How much of art comes from the artist?

I just can't even fathom the argument that art is for anything other than communication. The more i think of it, the less sense it makes.

A photograph isn't art until it is developed and cropped, framed and presented.

Computer Generated Poetry isn't poetry until it is discovered out of a mess of 'unPoetry' spewed by the  machine. (which was, by the way created by people)

It is not art until it is a message. Until it is arranged. Until it is placed in context.

Art that does not communicate anything is not art. Otherwise Mt. Everest is more than just the biggest mountain it's one of the biggest pieces of art on the planet.